Punch, or the London Charivari is a wonderful source for history of science. It is impossible to think of a popular magazine today including jokes that span politics, science, the arts, classical reference and what we might call observational comedy. As with the image posted on the Ptak Science Books blog the other day, the editors of Punch had high expectations of their readers’ ability to recognise not just a handful of scientific celebrities but a while range of figures from the scientific community. Those of us who have commented on John’s post are struggling to be sure of the identities of some of those represented, or to explain just what the mathematician is doing with a fish that has so shocked a zero (have a look – and let me know if you can explain!).